LIGHT-EMITTING ELEMENT, DISPLAY DEVICE, AND ELECTRONIC EQUIPMENT

Title:

LIGHT-EMITTING ELEMENT, DISPLAY DEVICE, AND ELECTRONIC EQUIPMENT

Document Type and Number:

WIPO Patent Application WO/2022/153144

Kind Code:

A1

Abstract:

A novel light-emitting element is provided. Specifically provided is a light-emitting element comprising a positive electrode, an electroluminescent layer on the positive electrode, and a negative electrode on the electroluminescent layer, wherein a first layer is adjacent to a side surface of the electroluminescent layer, and a first region is adjacent to a side surface of the first layer. The electroluminescent layer and the first region are adjacent with the first layer therebetween. The refraction index of the first region is lower than the refraction index of the first layer. The angle θ formed by the bottom surface and the side surface of the electroluminescent layer is greater than 90°.

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Inventors:

YAMAZAKI SHUNPEI (JP)
EGUCHI SHINGO (JP)
UOCHI HIDEKI (JP)

Application Number:

PCT/IB2022/050073

Publication Date:

July 21, 2022

Filing Date:

January 06, 2022

Export Citation:

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Assignee:

SEMICONDUCTOR ENERGY LAB (JP)

International Classes:

H05B33/22; G09F9/00; G09F9/30; H01L27/32; H01L51/50; H05B33/02; H05B33/12

Foreign References:

JP2004288447A	2004-10-14
KR20190038143A	2019-04-08
US20160276418A1	2016-09-22
US20190067394A1	2019-02-28
JP2019102153A	2019-06-24

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